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(Article of periodic en Anglais - 2013)

Document title

Catchment size and contribution of the largest daily events to suspended sediment load on a continental scale

publishmd at$: Scales in soil erosion

Authors(s) and Affiliation(s)

GONZALEZ-HIDALGO J.C. (1 2) ; BATALLA R.J. (3 4) ; CERDA A. (5) ;
(1) Dept. of Geography, Univ., Zaragoza, ESPAGNE
(2) ISAC-CNR, Bologna, ITALIE
(3) Dep. of Environment and Soil Sciences, Univ., Lleida, ESPAGNE
(4) Forest Science Center of Catalonia, Solsona, ESPAGNE
(5) Dept. of Geography, Univ., Valencia, ESPAGNE

Abstract

The AA. used 2 massive datasets of daily suspended sediment load facilitated by the United States Geological Survey (i.e. USGS Ancillary database), and the Hydrological Service of Canada (i.e. HYDAT dataset). The whole study area covers most of the temperate and sub-polar latitudinal climate conditions. The data from more than 1800 catchments show that the contribution of few events represents a high proportion of the total basin suspended sediment load. The analysis suggests that the relative contribution of different n-largest aggregated daily events on total suspended sediment load decreases as catchment size increases. This is a general pattern and means that, for instance, time compression of suspended load is exacerbated in small catchments; hence, relatively few events are the key to explain the catchment sediment export. In addition, the relative contribution of the n-largest daily event to the suspended sediment load seems to be independent of climate conditions in small catchments

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 102 [pp. 40-45]

Bibliographic references : 41 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2010.10.011

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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